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Fudgy Chocolate Sheet Cake with Cocoa Icing

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This Fudgy Chocolate Sheet Cake with Cocoa Icing is the perfect way to serve dessert to a crowd. Who doesn’t love a tender, frosted slice of chocolate cake??

Fudgy Chocolate Sheet Cake with Cocoa Icing on a white dessert plate with ice cream, mint and raspberries

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Fudgy Chocolate Sheet Cake with Cocoa Icing

It’s pretty much a given that any party I’m hosting will have a chocolate dessert on the menu! From an exquisite flourless chocolate cake topped with berries to blissful molten lava cakes to dense, delectable fudgy brownies, I’ve made them all. But if I’m feeding a crowd,  a chocolate sheet cake makes most sense. Squares of this dense cake are topped with a cocoa icing that’s reminiscent of fudge. Yeah, how can that be bad??

Slice of Fudgy Chocolate Sheet Cake with Cocoa Icing on a square white plate with raspberries and mint

A Double Dose of Chocolate

This cake has more chocolate intensity than our favorite chocolate syrup brownies, so a scoop of vanilla ice cream is a nice complement. Sweetened whipped cream and berries would also jazz up these squares of deliciousness! I was told I can make this one again, and that’s high praise around here. Even Katie enjoyed a slice of this fudgy chocolate sheet cake, and she’s a hard sell when it comes to chocolate desserts. What’s your favorite dessert to feed a crowd? If you don’t have one, I recommend this fudgy chocolate sheet cake, of course. And don’t forget the cocoa icing for double the yum!

Ice cream topped Fudgy Chocolate Sheet Cake with Cocoa Icing on a white dessert plate

Progressive Eats
Welcome to Progressive Eats, our virtual version of a Progressive Dinner Party. Our menu this month features recipes to help you celebrate the last long weekend of the summer, Labor Day! We’ve got a great mix of recipes from appetizer to desserts, starting with a cocktail, then fabulous dishes perfect for picnics, potlucks, and barbecues! Hosting this month is Jane from The Heritage Cook.

Holiday Weekend Favorites

Cocktail

Appetizer

Main Course

Vegetable/Side Dish

Desserts

If you’re unfamiliar with the concept, a progressive dinner involves going from house to house, enjoying a different course at each location. With Progressive Eats, a theme is chosen each month, members share recipes suitable for a delicious meal or party, and you can hop from blog to blog to check them out.

Used in This Fudgy Chocolate Sheet Cake Recipe:

More Desserts to Feed a Crowd:

 

Chocolate Sheet Cake slice on a square white plate with raspberries

Chocolate Sheet Cake

The perfect way to serve chocolate cake to a crowd!

Prep Time 30 minutes
Cook Time 20 minutes
Total Time 50 minutes
Yield 24 servings

Ingredients

For the cake:

  • 2 cups flour
  • 2 cups sugar
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 2 eggs
  • 2 egg yolks
  • 2 teaspoons vanilla
  • 1/4 cup sour cream
  • 8 ounces semi-sweet chocolate, chopped
  • 4 tablespoons (1/2 stick/2 ounces) butter
  • 3/4 cup vegetable oil
  • 3/4 cup hot water
  • 1/2 cup Dutch-processed cocoa powder

For the icing:

  • 1 stick (8 tablespoons/4 ounces) butter
  • 1/2 cup heavy cream
  • 1/2 cup Dutch-processed cocoa powder
  • 1 tablespoon light corn syrup
  • 3 cups powdered sugar
  • 1 tablespoon vanilla

Instructions

  1. Preheat oven to 350º. Grease 18- by 13-inch (half-sheet cake sized) rimmed baking sheet. Put flour, sugar, baking soda, and salt in large bowl and whisk to combine. Whisk eggs and yolks, vanilla, and sour cream in another bowl until smooth.
  2. Microwave chocolate, butter, oil, water, and cocoa in a large Pyrex measuring cup or microwave safe bowl till chocolate is soft. Whisk till smooth...microwave a little longer if all chocolate is not melted.
  3. Whisk chocolate mixture into flour mixture until well combined. Whisk egg mixture into batter, then pour into prepared pan. Bake until a toothpick inserted into center comes out clean, 18 to 20 minutes. Transfer to a wire rack to cool.
  4. About 5 minutes before cake is done, heat butter, cream, cocoa, and corn syrup in large saucepan over medium heat, stirring occasionally, until smooth. Take off heat and, whisk in powdered sugar and vanilla. Spread warm icing over hot cake.
  5. Let cake cool to room temperature on wire rack, about 1 hour, then refrigerate until icing is set, about 1 hour. Cut and serve.

Notes

Adapted from Cook's Country.

Nutrition Information:

Yield:

24

Serving Size:

1 slice

Amount Per Serving: Calories: 312Total Fat: 13gSaturated Fat: 4gTrans Fat: 0gUnsaturated Fat: 8gCholesterol: 38mgSodium: 82mgCarbohydrates: 48gFiber: 2gSugar: 36gProtein: 3g

HOW MUCH DID YOU LOVE THIS RECIPE?

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Note: This post may contain affiliate links; view my Disclosure Policy for details. I earn a small percentage from any purchase you make by clicking on these links at no extra cost to you.